I had Karmic Dice off for "the TT experience" roughly 1200 rolls from each side and my findings were the "player rolls" were averaging around 7.4 and enemy rolls are averaging 10.9. So get used to hitting the F5 button before your good attacks and then the F8 button when you inevitably miss it with a stupidly low roll.
Footnote: these averages are the best I could get being when you have advantage or disadvantage it only tells you the die roll that is used. In my play through I had advantage far more than disadvantage so that 7.4 should technically be lower, but being disadvantage take the lower of 2 rolls and I can't see what the higher roll was to properly calculate the averages, I'm going to say they cancel each other out.
Could you post that data, in a google spreadsheet or something? It's been a pet project of mine to analyze the rng throughout EA, but I don't yet have any large data sets for dice rolls in the Full Release.
1200 rolls is enough to be fairly robust...except for the whole "mix of normal and (dis)advantage rolls." There's probably some statistical method to account for that unknown...
